112 documents found, page 1 of 12
The first record of Lysmata rauli Laubenheimer and Rhyne, 2010 (Decapoda: Carid...
Wirtz, Peter; Moura, Carlos; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.Here we report the first record of the shrimp Lysmata rauli Laubenheimer and Rhyne, 2010 in the eastern Atlantic, from the intertidal at Kere Island, Bijag & oacute;s archipelago, Guinea-Bissau.
Hotspot of exotic benthic marine invertebrates discovered in the tropical east ...
Moura, Carlos; Wirtz, Peter; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.This study aimed to explore and document putative exotic marine benthic invertebrate species in the Bijag & oacute;s Archipelago, Guinea-Bissau, to enhance understanding of marine biodiversity and address the extent of marine species introductions. The research was conducted in the Bijag & oacute;s Archipelago, a UNESCO Biosphere Reserve located in Guinea-Bissau. The study involved the region's first scuba-divi...
A pioneering longterm experiment on mesophotic macrofouling communities in the ...
Canning-Clode, João; Gizzi, Francesca; Braga-Henriques, Andreia; Ramalhosa, Patrício; Abreu, Pedro; Álvarez, Soledad; Biscoito, ManuelThe mesophotic zone represents one of our planet's largest and least explored biomes. An increasing number of studies evidence the importance of macrofouling species in marine ecosystems, but information on these communities and the factors influencing their structures at mesophotic depths remain poor. This lack of understanding limits our ability to predict anthropogenic impacts or conduct restoration operatio...
An update on the genus Ischiomysis with a description of I. proincisa sp. nov. ...
Wittmann, Karl J.; Wirtz, PeterIschiomysis proincisa sp. nov. is described from a comparatively large, semi-dark marine cave in sublittoral waters off the small island Ilhéu das Rolas, directly south of São Tomé Island in the Gulf of Guinea. As striking features, the new species is distinguished from both its congeners by an anteriorly incised rostrum in both sexes and by two versus only one modified flagellate spine on the ischium of the ei...
Filling gaps in the Webbnesia marine diversity: the madeiran sponge fauna
Santín, A.; Wirtz, Peter; Neves, Pedro António Nobre Soares Pinto das; Ribeiro, CláudiaDespite few pioneering works in the late XIX and early XX century, the poriferan fauna of Madeira has remained mostly unexplored until today, Madeira being one of the least studied eastern Atlantic archipelagos in terms of its sponge diversity. After a thorough analysis of both new material collected by SCUBA diving as well as a literature research, 140 sponge species are known to occur in the Madeira archipela...
Range extension for conopea saotomensis (crustacea; cirripedia: archaeobalanida...
Moura, Carlos; Wirtz, Peter; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.; Syoc, Robert VanBarnacles of the genus Conopea are obligate epibionts of gorgonians and antipatharians. The species Conopea saotomensis Carrison-Stone et al. 2013, previously only known from the islands of S & atilde;o Tom & eacute; and Pr & iacute;ncipe and the coast of Gabon, is reported from the Bijag & oacute;s archipelago, Guinea-Bissau, based on morphological examination and DNA barcoding of specimens. The new record ext...
Pelagic sargassum and some associated mobile fauna: new records for the archipe...
Ferreira, S. J.; Kaufmann, M.; Wirtz, Peter; Berimbau, Luis; Araújo, R.Starting in the summer 2023 and peaking in late 2023, large amounts of Sargassum were observed floating off the coast of Madeira Islands, Portugal. The analysis of the samples revealed the presence of the three most common morphotypes of the two known species of pelagic Sargassum: S. natans I, S. natans VIII, and S. fluitans III. This is the first record for the subtropical eastern Atlantic Ocean for S. natans ...
First record of the starfish Goniaster tesselatus at Madeira Island
Wirtz, Peter; Machado, JorgeNumerous new records of marine species, mostly with tropical affinities, have been made at Madeira Island in recent years (e. g. Ramalhosa et al. 2014 and 2017, Wirtz 2020 a, Wirtz & Araujo 2021). Some of these species appear to have extended their range northwards (e. g. Wirtz & Berenger 2017, Schäfer et al. 2019, Wirtz 2021), possibly due to global warming (Siemer et al. 2021). Eleven shallow-water starfish s...
First record of the Starry Weever Trachinus radiatus (Cuvier, 1829) from the Ma...
McIvor, Ashlie; Wirtz, PeterThe Starry Weever (Trachinus radiatus Cuvier, 1829) is one of nine extant species of the Trachinidae family which typically inhabit sandy-bottomed environments. This species is wide-spread throughout the Mediterranean Sea and in the Eastern Atlantic from continental Portugal to Angola, including the Canary Islands (Seret & Opic 2011, Smith 2016). It has, however, not yet been recorded from the Azores, Madeira, ...
Further investigations on fincrawling in flatfishes (Teleostei: Pleuronectiform...
Wirtz, Peter; Davenport, John; Chanet, BrunoFincrawling is a unique, recognizable behaviour pattern exhibited by many flatfishes (order Pleuronectiformes), whereby the fish uses the fin rays of the dorsal and anal fins to walk over the substratum. The distribution of this behaviour among flatfishes indicates it appeared early in the phylogeny of the Pleuronectiformes. Fincrawling is a common character of the Pleuronectoidei, and a possible synapomorphy o...